The Curing Kinetics Analysis of Four Epoxy Resins Using a Diamine Terminated Polyether as Curing Agent

被引：32
作者：
Zhao, Heng [1 ]
Xu, Shuangshuang [1 ]
Guo, Anru [1 ]
Li, Jie [1 ]
Liu, Dong [2 ]
机构：
[1] China Acad Launch Vehicle Technol, Aerosp Res Inst Mat & Proc Technol, Beijing 100076, Peoples R China
[2] Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China
来源：
THERMOCHIMICA ACTA | 2021年 / 702卷
关键词：
Novel curing agent; Epoxy systems; Curing kinetics; Diamine terminated polyether; MECHANICAL-PROPERTIES; FRACTURE-TOUGHNESS; THERMOSETS; COPOLYMER; PERFORMANCE; COMPOSITES; MORPHOLOGY; BLENDS; ETHER;
D O I：
10.1016/j.tca.2021.178987
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Diamine terminated polyether (DAPE) is used as a novel curing agent for ductile epoxy resins. To investigate the curing kinetics, non-isothermal differential scanning calorimetry (DSC) tests were conducted to investigate four ductile epoxy/DAPE systems, including tetraglycidyl-4,4'-diaminodiphenyl methane (TGDDM)/DAPE, diglycidyl 4,5-epoxycyclohexane-1,2-dicarboxylate (TDE-85)/DAPE, triglycidyl-p-aminophenol (TGPAP)/DAPE and hydantoin epoxy resin (HER)/DAPE systems. According to the Malek method, the four epoxy systems suit the Sestak-Berggren kinetic model (SB (m,n)). The SB (m,n) model can well fit the curing reaction of all epoxy systems. By applying the Friedman method, the activation energies (E-a) at different conversion (alpha) were calculated, which provide an insight of curing mechanism of the flexible curing agent for ductile epoxy resins.
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页数：12
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